Storing reusable and often referenced values is one of the many best practices when using Infrastructure-as-Code (IaC). It makes it easier to author IaC templates and increases readability, so you do not have huge expressions taking up a lot of space in the template's body. Azure Bicep Templates use parameters and variables to achieve this. Using parameters and variables is the first step to making neater templates and is a security recommendation to avoid hard-coding secure values such as passwords.

In this lab, you will learn how to use parameters and variables in a Bicep template.

Learning Objectives

Upon completion of this lab, you will be able to:

• Understand the benefits of using parameters and variables
• Store and reference complex expressions using parameters and variables
• Store parameters in a separate, connected parameters file 

Intended Audience

• Students who have taken the Introduction to Azure Bicep Templates lab and want to extend their knowledge
• IT professionals interested in Infrastructure-as-Code
• IT professionals interested in the next generation of ARM Templates
• Cloud Engineers
• Cloud Architects
• DevOps Engineers

Prerequisites

Familiarity with the following will be beneficial:

• Azure Web App concepts.
• Familiarity with the Azure CLI.
• Familiarity with the structure of Azure Bicep Templates is highly recommended.

The following labs can help to fulfill the prerequisites:

• Inspecting Resources using Azure CLI
• Introduction to Azure Bicep Templates